ILC 1 expanded class q5h

      q5h    acoustic 

q5h	acoustic  [bioacoustics]  « g3
q5h(80)  [an]	of dB intensity  « g30
q5h4db	vocal, calls
q5h52l	underwater acoustic
q5h52s	vibration
q5h55c	chaotic sounds
q5h55i	simple impulses
q5h55j	impulse series
q5h55r	harmonic sounds
q5h55t	tonal sounds
q5ha	infrasound  « g3n
q5hbWd	audible sounds
q5hb	low sounds, 10 to 100 hertz  « g3o
q5hc	medium sounds, 100 hertz to 1 kilohertz  « g3p
q5hd	high sounds, 1 to 10 kilohertz
q5he	ultrasound  « g3r

or

Facets key
0  under aspect      
1  at time           
2  in place          
3  through process   
4  made of element   
5  with organ        
6  from origin       
7  to destination    
8  like pattern      
9  of kind